At the end of a perfect day, when the Sun is setting, the beams of light we see slant through the atmosphere nearly parallel (tangent) to the Earth’s surface.
Assume for a moment that there was some way to produce simple organic molecules on the early Earth.
Sponges are outliers in biology’s big bang, the Cambrian explosion. Their embryos appear in Precambrian strata, leading some to consider them primitive.
Transposable elements modify gene regulation in maize to confer drought tolerance, alter flowering time, and enable plants to grow in toxic aluminum soils.
I particularly appreciate how his arguments complement my own analyses addressing the origin of life.